Paper-marking machine



Mardi 14, 1933 H. R. WILLIAMS PAPER MARKING MACHINE 2 Sheets-Sheetl lOriginal Filed March 14, 1929 Marh 14 1933-. f H. R. WILLIMS 1,901,425

PAPER lnaARKINGf MACHINE Original Filed March 14, 1929 l 2 Sheets-Sheet2 A TI'ORNE YJ Patented Mar. 14, 1933 .Unirse srxsas PATENT oniricaHARRISON B. WILLIAMS, F YORK, N. Y.

1mm-11H1 alunno naennm Application med laren 14, 41999, senil No.347,001. Renewed my 19, 1932..

The present invention relates to a device for impressing upon a web ofpaper as it passes through a paper making machine, signs or marks whichmay serve to identify 5 the paper or which may serve to give the paper adistinctive character. The device may be applied to and be used inconnection with a paper making machine such as a Fourdrinier machine andmay be disposed at any desired point in the machine after the ulp hasleft the screen or forming wire and as reached a stage at which it hastaken on the form of a continuous web of paper.

In general the paper marking device which constitutes the subject matterof the present invention may be positioned to operate on a moving aperweb or sheet after it has been fully ormed and after it has passedbetween the couch rolls. It may, however, be placed at any point afterthe web has been formed and prior to the time it has been completelydried; the main prerequisite being merelythat the web must still be in amore or less damp condition.

More specifically, the marking device may referably be placed at a pointbetween the and last drier rolls. At this point the web is still in asomewhat plastic condition and the subsequent action of the drier and 3calenders is not such as to obliterate the mark.

The device comprises a exible endless marking belt which passespreferably between two metallc'rolls one of which may be a drier roll,the belt passing over the upper roll and another supporting roll whichis spaced therefrom.

The marking belt has substantially the same width as the width of theweb being 40 formed and is provided with a vulcanized hard rubbermarking surface which has a substantial amount of resiliency andyieldability. This rubber surface may be divided into a plurality ofsectional areas, each area being formed with the mark or design which isto be impressed upon the web so that when the web is cut into sheetseach sheet vwill bear one or more of the impressed marks.

The rubber layer which constitutes the marking face of the belt isvulcanized on a flexible endless belt of anysuitable material such ascanvas or the like.

The rolls between which the marking belt travels are preferably providedwith meansv for adjusting the pressure between the rolls and foradjusting the pressure exerted upon the marking belt.

The invention will best be understood by reference to the accompanyingdrawings which illustrate the present preferred embodiment yof theinvention and the manner in which itis" utilized in the association witha paper making machine, it being understood, however, that thisembodiment is merely illustrative and that it is not to serve as alimitation upon the invention as defined in the appended claims.

In the drawings:

Fig. 1 shows a portion of a paper makingV machine and the paper markingdevice associated therewith.

Fig.- 2 is a top plan view of the paper marking device.

Fig. 3 is a developed view of the marking surface of the marking belt,and

Fig. 4 is a cross sectlon of the belt.

Referring to the drawings, l() indicates a part of a paper makingmachine and comprises the supporting frame 11, the calender 12, theconveyor belt 13, which travels around the supporting rolls 14, 15 and16 and thereby presses the paper web 17 against the cal` ender 12. Thepaper marking device comprises a lower roll 18, an upper roll 19, and amarking belt 20 which travels over the upper press roll 19 and thesupporting roll 21. The lower press roll 18 is carried by the bearings22 in the frame 10. l

In order to provide for the variation of pressure between the rolls 18and 19, the bearings 23 of the upper roll 19 are each mounted to slidevertically'between two sides of the forked supporting standards 24, oneof which is mounted at cach end of the roll in the manner shown. Thestandard 24 which is in the form of an inverted U is provided in itshorizontal portion with a horizontal passage 26 thereby breaking thehorizontal portion of the standard into two spaced horizontally disposedparts, the space therebethreaded stud 25 so that when the worm wheel isrota ted the bearing blocks 23 are moved vertically.

In order to provide for the simultaneous and synchronous `movementof thetwo bearing blocks 23 a horizontal shaft 30 having at each end a wormgear 31, disposed to cooperate with the worm wheel 27 is provided, the

shaft 31 being supported at each end by a sleeve bearing 32 which iscarried by the standard 24. Y'One end ofthe shaft 30 is provided with amanual operating wheel 33. It vwill be seen therefore that by therotation of the wheel 33 in one direction both bearing blocks23 will bemoved upwardly thereby re- 'ducing the pressure between the pressurerolls 18 and 19, whereas the rotation of the operating wheel in theopposite direction will move the bearing blocks 23 downwardly andthereby increase the pressure between the rolls 18 and 19.

The endless marking belt preferably consists of a three ply backing 34of textile material such as canvas or the like and a marking surface ofrubber 35 vulcanized onto the canvas backing. The marking surface 35 isfurnished with the designs or marks thereon either by engraving, or byforming the same thereon during the process of vulcanization and therubber is made sufficiently hard so that it will impress its design uponthe web of paper 17 while it is still in a 'damp condition or while itis stillin a plastic condition, the rubber, however, being alsosufficiently resilient and yielding so that the web of paper will not beinjured in anymanner.

The endless marking belt is preferablyY of the saine width asthe web 17and in the form shown in Fig. 3 is divided into a plurality of sectionalareas 36, each of which is formed to contain the markl or design whichis to be impressed upon the web so that when the web passes through thepaper making machine the mark or design will be impressed thereon at alarge number of points. When the web is cut/.into sheets ofpredetermined sizes each sheet will contain the mark.

Wh'ile .the preferred embodiment of the marking belt shown-hereinconsists merely of a layer of flexible material such as textile materia]or other materials that are commonly used in belts and a marking surfaceof yielding hard rubber vulcanized onto the layer -Of backing material,if desired the back-surface of the textile-material namely the surfaceithat comes in immediate contact `with the pressure roll may be providedwith a corres onds to the speed of -travel of theiveb t rough the papermaking machine. The driving power is derived from thedrivingLmechanismthat-is applied to the other dliven elements of the'paper making mac me.

If desired the rubber layer 35 ma be made I in the form'of-alseparatebelt.' Vith this form of construction the rubber marking belt may berenewed from time to time, while the supporting belt 34, which serves torelieve the rubber belt of strain, ma ,remain in use. If desired a layerof soft ru ber may be disposed between the belts 34 and 35 as acushioning layer.

It will be seen from ythe above description and from the drawings which.constitute a part of the presentapplication' that I have provided aI,paper marlnng device which is simple' in construction Aand operationand which may be readily adjusted so as to provide the desired pressuredepending upon the nature and condition of the paper at the time themark is impressed thereon. 'The specific embodiment of the inventionsubmitted herewith is merely illustrative and it is apparent 'that manychanges may be made by persons skilled in the art Without departin fromthe spirit of `my vinvention as define b the appended claims.

What fclaim is: v

1. In combination with a paper making machine through which the paperpasses as a continuous web, a pair of metal rolls, the paperpw'eb' beingarranged to pass continuously between said rolls, a vertically slidablebearingblock disposed at each end ofone of said rolls, a guide for eachvof said bearing blocks, a vertically disposed threaded stud integralwith each of said lbearing blocks, an internally threaded wormwheelcarried by each of ,said studs, means for holding said Worm wheelsagainst vertical movement, and means for rotating said worm wheelssynchronously.

2. In combination vvith'a paper making machine through which the -paperpasses as a continuous web, a pair of metal rolls, thepaperfweb beingarranged to pass continuousiy between said rolls, a. vertically slidablebearing block disposed at each end of one of 'ot said blocks, an-internally'threaded worm wheel carried by .each of said studs, Wormwheelsbeing disposed between said spacedV transverse members andmanually operable means for rotating said worm wheels synchronously.

3. In a machine for impressing a marken a continuous web of paper in theprocess of manufacture after the web has been subjected to drying andbefore drying is completed; an endless marking belt comprising a textilematerial and a layer of rubber coextensive with said material andvulcanized thereon, said rubber being formed to provide a mark to be imressed in the paper, said rubber having su cient hardness and yieldabil#ity to impress a clear mark without injury to the web.

In testimony whereof I have aitxed my signature to this specification.

HARRISON R. WLLIAMS.

